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(NoModU F. KUKKUCK 8v H. ARND.

MANUPAGTURE 0F TRUNK TOPS. No. 279,258. 4 Patented June 12,1883.

A l INVENTORS- Frieden/'0k Kali- Lacie %9 @f M j yUNITED ,STA-TES.'N

j OFFICE,

. rninnnRiCK KUKKUCK AND HENRY'ARND, or sr. LoUis, Mo., AsisiGNoRsf To run ARNDl MANUFACTURING COMPANY,- CF sAMn PLACE.

MANUFACTUREF TRLnvK-'ropaV SPECIFICATIONforming part of Letters Patent No. 279,258, dated June 12, 1883.

` Application filed JanuaryQO, 18.83. (No modem To'a/ZZ whomt't may concern,.-

Be it known that we, FRIEDERICK KUKKUCK and HENRY ARND, citizens of the United States, residing at St. Louis, in the State of Missouri, have invented certainlmprovements in the Manufactureof Trunk-Tops, of which 'the' following is a specicatiOn.

' Our invention relates to the class of trunktops described in Letters Patent No. 262,956,

granted to us August 22, 1882, and in Letters Patent No. 268,294, granted December 5, 1882,

to Friederick Kukkuck-that is, to what are known as barrel'fstave, tops, or those of a concavo-convex shape having their arcs of greatest height in the central transverse and longitudinal lines, and arcs symmetrically decreasing in size on both sides of each'central line. In those patents the trunk-tops are described as made of several layers or sheets of veneer, each composed of a single piece gored at either the sides or ends and glued together under pressure in a properly-shaped press or former. In making such trunk-tops, as described in our patent, we employed pieces of cloth or cloth matrices dipped in parafne or some other suitable material to prevent the glued tops from adhering to the bed or follower of the press and to each other when, as in practice, several of such tops are placed in the press at the same time. We have found in practice that the cloth matrices are defective and cannot well be successfully used, for the reason that the cloth cannot be stretched in the middle and compressed along its edges to conform to the shape required without wrinkling and there is, therefore, always a liability of its being caught in the gores in the sheets of veneer as they are pressed together and caused to assume the required contour,

move freely to bring the edges of the gores together. .Where each sheet of veneer is conn nor do such matrices permit the veneer to,

vention is designed to obviate this diculty;

vand it consists inemploying matrices of suficient stiffness to render the defective Voperation described impossible. -Ve prefer to make v them of wood,though any suitable material may be used. They must of course be shaped to exactly conform to the faces ofthe bed and head or follower of the'press, and can readily be made of light pieces of wood or veneer, after the manner described in our patent. 16o

In the accompanying drawings, Figure l is a sectional elevation of a press or former. Fig.

2 is longitudinal sectional view through one 0f our improved wooden orV stiff matrices, f andFigr-Sisan end'vicw of the same. Fig. `65 4 is a, detail. plan view, showing the shape. of the gored pi'ecesof veneer which forni the out! side layers of the trunk-tops; and Fig. 5 is a similar view, showing the shape of the gored piece which forms the inside layer; and Fig. 7o 6 is a perspective view, showing a complete separator or matrix.

The press illustrated in the drawings is si mr lar to that described in our patent.

XVe preferably make the trunk-tops of three layers of veneer. The upper and lower or two outside layers are usually shaped as illustrated in Fig. 4 andthe inside layer as represented in Fig; 5. Thegored sheet to form the upper layer of the trunk-top is placed in one So of our improved stiff matrices, which is coated with parafne or some other suitable substance which will prevent the adhesion of the matrix to the trunk-top to be formed, and placed in a snap-flask or openbottom box of suitable shape. The piece to form the inner layer, hav ing been coated with glue, is then putin place on the sheet already in the matrix, and the other outside layer 011 the top, and the set of veneer is then covered by another matrix. 9o Pressure should now be applied by hand to bend the .veneer and bring the edges of thc gores together to cause the sheets of veneer to temporarily retain the shape thus given them. Other layers or sets of veneer and matrices to form other trunk-tops can now be piled inlike manner upon the first one and pressed by hand into shape until the desired number of sets is inV the ask. Then the wholelot is put in the press completely formed and allowedto remain until 10o the glue becomes hard. With such stiff smooth matrices, shaped to conform to the press, `each trunk-top is practically formed in a mold of its own, although, as above mentioned', a number of trunk-tops are held in the press at one time, and the pieces of veneer, as they give under the pressure of the press, can, readily move to bring the edges of the gores tightly together. By operating vin the manner described we practically form each trunk-top as the operation proceeds, so that the glue does not entirely set before the veneers are initially bent, and is therefore but little disturbed, as would be the case if the first pressure were reserved until several trunlctops had been piled and put in the press. Vhere cloth matrices are employed the cloth must be laid on a flat surface, the veneers piled, and the whole mass of several trunktops put in the former and pressed down the full distance at the same time. The whole mass of cloth and veneer therefore moves together at the ends, thus forming wrinkles in the cloth, which mar the faces of the trunk-tops, and often the cloth is caught between the edges of the gores and the whole mass stuck together; and where the veneers are piled upon each other, as above mentioned, the glue is liable to set before pressure can be applied, and imperfect work results.

\Ve are aware that in the patent of Strat ton, No. 14,432, granted March 11, 1856, a machine for shaping shoe-soles is shown in which a series of heavy followers are employed, one

above the other, four or more soles being placed between each pair of followers. We therefore make no claim to'any such organization.

What we claim as our invention is 1. rPhe improvement in the method of making concave-convex trunk-tops composed of several gored layers of veneer, consisting in successively shaping each series of layers of veneer forminga trunk-top separately, as such series of layers are successively placed between thin stiff matrices or separators shaped to conform to the bed and follower of the press and the trunk-top to be produced, and then placing the whole lot under the same pressure Y until dry.

2. The improvement in the method of mak-` ing concavo-convex trunk-tops of several layers or lsheets of veneer, which consists in placing thin stiff separators shaped to conform to the bed and follower of the press and to the trunk-tops to be produced between the pairs of series of layers of veneer composing the trunk-tops, and thenplacing the whole lot under pressure.

In testimony whereof we have hereunto subscribed our names this 28th day of December, A. D. 1882.

FRIEDERICK KUKKUGK. HENRY ARND.

Vitynesses: f R. E. SCHRICK, XVM. P. ARND. 

